- Title
- Parsimonious Identification of Continuous-Time Systems: A Block-Coordinate Descent Approach
- Creator
- González, Rodrigo A.; Rojas, Cristian R.; Pan, Siqi; Welsh, James S.
- Relation
- 22nd World Congress of the International Federation of Automatic Control (IFAC). Proceedings of the 22nd World Congress of the International Federation of Automatic Control (IFAC) [presented in IFAC-PapersOnLine, Vol. 56, No. 2] (Yokohama, Japan 09-14 July, 2023) p. 4216-4221
- Publisher Link
- http://dx.doi.org/10.1016/j.ifacol.2023.10.1775
- Publisher
- Elsevier
- Resource Type
- conference paper
- Date
- 2023
- Description
- The identification of electrical, mechanical, and biological systems using data can benefit greatly from prior knowledge extracted from physical modeling. Parametric continuous-time identification methods can naturally incorporate this knowledge, which leads to inter-pretable and parsimonious models. However, some applications lead to model structures that lack parsimonious descriptions using unfactored transfer functions, which are commonly used in standard direct approaches for continuous-time system identification. In this paper we characterize this parsimony problem, and develop a block-coordinate descent algorithm that delivers parsimonious models by sequentially estimating an additive decomposition of the transfer function of interest. Numerical simulations show the efficacy of the proposed approach.
- Subject
- continuous-time system identification; block-coordinate descent; parsimony; biological systems
- Identifier
- http://hdl.handle.net/1959.13/1503240
- Identifier
- uon:55307
- Identifier
- ISBN:9781713872344
- Rights
- x
- Language
- eng
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